Transmission



April 2, 1929. A. H. JESSEN 1,707,399

TRANSMISSION Filed April 8, -l926 2 Sheets-Sheet l l0 INTERMEDIATE BRHKEL180 15 ii U REVERSE 1 N VEN TOR. AH. JESSEN ATTORNEY.

Patented Apr. 2, 1929,

' ARNOLD H. JEssnN; GF'LOSI A-NGELZES, CALIFORNIA.

TRANSMISSION.

' Application filed April 8, 1926.. Serial No. 100,650..

I My invention relates to transmission mechanisms especially; adaptedfor use in connection with motor vehicles, although in its broaderaspects is adapted for general use wherever it is desired to provideforspeed changes, areverse movement, brake, application, or air-idlingmovement. 7

It accordingly is an object of my invention to providea novel tor-moi.transmission mechanism in which a set of clutch elements in the shape ofconical drums, preferably Overlapping, are provided, one of whichadapted selectively to be brought intocngagement with the two others sothat they may be held stationary or revolve, by means of a slidingclutch, preferably of the ball type associated with a set of concentrictubular shaftsade-pted selectively tobeloclreol to a drive shaft, whichtubular shaIts each have associated therewith asun gearin mesh withtwoplanet pinions associatedwith one of said clutch elements, which clutchelement functions as a planet carrier, athirdplanet pinion in saidplanetcarrier meshingwith a drive pinionon a drive shaft adapted to y beclutched 'to'a source of power, said mechanisnifunctioning to cause saiddrive shaft to drive said driven shaftat difi erent speeds,

and also to reversethe movement of said driven shaft, brake applicationbeing. made by bringing the intermediate clutch element in contactwithone ofsaid drums, the neutral" or idling movement of the mechanism,however, being accomplished by an'additio'nal clutch device, preferablyassoclated with the flywheel ofthe motorv or source ofpower.

The above and. further objects and advantages as will hereinafter morefully appear I obtain by the mechanism constructed in accordance withthe specification andillnstrated' on the drawings accompanying the.same, and forming a part of-myapplication;

Reference is had to the accompanying V drawings, in which similarreference charasters denote simllar parts.

In the drawregs, 1 e i Fig. 1 1s a fragmentary cross-sectlonalvlew ofthe conical clutch elements, associated with my transmission mechanism,and the slidable oall clutch, the parts bemg n posltion for a directdrive,

Fig. 2 is a similar view of the parts con- Iiected for low speed, r i

Fig. 3 is a similar view illustrating the manner in which the parts arecoupled for intermediate speed,

Fig. 4. is a similar View depicting the various parts in position forreverse movement, Figs. 1 and 3 also showing the partsin'their Fig. 5 isa front elev-ational view ofuthea position when'brake applicationismade,v

clutch associated with the fly wheel to provide for a neutral "oridling. positionof the mechanism, and

.:Fig. 6 is a cross-sectional View onitheline 6 6, Fig. 5, showing alsoinfragmentary form-- the conical clutchv elements and. the planetcarrier associated therewith;-

Describing my invention more in detail,

themechanism disclosed herein is an im provement on mypending;application for a transmisslon mechanism, Serial #-69.,140,-.

tiled NOV'QM, 1925. i V

It has been found in practice that by providing the flywheelofthe motorwith a clutch of specialconstruction, operating, so far as I am aware,in directly the opposite direction:

to known clutches, the structure disclosed in the applicationabovereferred to can'be more inexpensively manufactured,lcertain. parts ofsaid structure heingomitted byprovidi ngfm I an idling movement solelyby disengaging. said clutch from the fly: wheel witliwhich it isassociated. rlhis improvedconstruction. also provides for a simpler andsmoother. ac tion, without any objectionable noise or move-.

m'ent when the parts areshifted, saidshifting.

being accomplished in a simple manner,,and without any danger to thepartdsuchasstriF ping of the gears, the mechanism beingabso--- lutelyfoolproof.

As'disclosed in the pendingapplicationz above referredgto, aset ofoverlapping conical I clutch elements or members- 8, 9 and. 10 are Iprovided, the conical members .8 and 10 being.

intermittently rotatable and. stationary, the

intermediate. conical member or planet: car; rier 9 belng adapted.intermittently tofbe. brought into engagement witheither conical member8 or 10, as shown snore particularly; in Figsrl to i inclusive. Itwillbeunderstood, of course, that complete conical mem= hers areprovided, the-structure being duplis catedon the said figures. l i

As seen'in Figs. 1 to 4 inclusiveand 6, drive and. driven shafts28 and33 a1'e,,provided,

lower sideof thecenter line of whichshafts are intermittently.broughtinto engagement by means of three planet .pinions Gr, housed m.the carrierv 9 of conventional iorm, to eflectthe speed changes vdesired,.s ai l pinions having a planetary movement only.

clutch c is equii v for with the bit as shown in Fig. l, the

when a reverse movement of the shafts is des1red,t-l1us differingmaterially from thetransmission constructions now on the marke The driveshaft 23 is equipped with a drive pinion i l meshing with one of saidplanet pinions G, while the other of said pinions are in mesh with thesun gears s5 and 4:6

' the tubular shaits 31 and 1-3, 'Jresently to be 7 keyed or other useassociated with the tubular low speed shalt 3i. h

particularly described, for a r, a parts are positioned as shown infilurrounding the tubular sh able or reciprocating clutch c, equipped p,a groove 36, adapted to be qgagz cd by fork or arm, not shown, whichfork or may be operated by means of l form of gear shit";inn mechanism,eitir conventional or special construction.

seal with a cam projection n cut-away 1 ant. o

and a pair of c:

For a i ect drive, the siai pression rii'ig ll, whi ch is associatedwith the gear s to the driven shaft- 33 by the 5 18 a1 i lo the slidableor reciprocating clutch o depressing said balls inthe sockets orcavities, the intermediateconical member or clutch element 9 beingdisengaged from the conical members 8. and 10, the cam projection 9'holding said balls locked. as shown. The clutch is in engagement withthe fly wheel F.

The position oi the parts for a low sp ed drive is shown in Fig. 2, thecam l porn ting the disengagement of the balls 18, the

earn '5 locking the. balls in the ball depression rings R, keyed orotl'ierwise associated with. the tubular low gear shaft 31, the clutch 0having been moved to the position shown, the concial member 9 being inlocked engagement with the planet carrier 8, as shown in said figure.The clutch C is also in engagement with the fly wheel F.

lhe intermediate drive position is shown in 3, the balls 18 being lockedto the shaiit l3, rotating the intermediate gears, the clutch 0 havingbeen moved to the position indicated, and the conical clutch 9 beiiiigg;in locked engagement with the planet. carrier 8. A brake application maybe made also with the parts in the position shown in this figure, theconical members 9 and 10 being brought into engagement for this purpose.A. brake application may also bemade by a reverse movethis instance isalso in engagement with the fly wheel F. 7

As just stated, both a reverse movement of the mechanism and a brakeapplication may be made when the parts are positioned as depicted inFig. 4-. in this case the cam 2' is in engagement with the balls 15,looking the depression ring R and the shaft 31., the conical members 9and 10 being; in engagement, and the planet pinions and sun gears havinga planetary action, as previously described, and this is the only timethey have such action. Any suitable mechanism may be pro vided ior shi.ting the conical member 9and the clutch 0. There no provision made inthe structure thus far described for a neu t'al position. Theconstruction for providing for a'neutral or idling movement will now bedescribed.

As seen in Figs. 5 and 6, the fly wheel F is equipped with a clutch C ofpreferably cylindrical term, and provided with a conical member 1, towhich are fulcrunied the arcuate members 2 and 3, which are desirablypro Vided with brake bands at of any preferred type, which bands areadapted. intermittently to be brought into frictional engagement withthe inner surface of the flywheel F, or disengaged therefrom.

Each arcuate member 2 and 3 is equipped with an enlarged portion 5 ofbifurcated cone or other member 1-6, an adjusting means 19 and 20 beinguser to adjust said arms toward and away from said cam, said meanstaking the form of a nut and bolt construction, preferably equipped witha ker'f 21 adapted to be engaged by a screw driver. It will be o'fcourse understood that any other adjusting means may be provided. Toretard the movement of the arms 7, and hold them in parallel relation, apair of helical or other springs are provided, anchored to said arms z sshown, and on the opposite ends are anchored to adjustablescrew-threaded bolts 23, similar to the bolts 19 and 20, and also eachequipped with a lrerf 2a to be enby a screw driver. It will beunderstood also that this construction is suggestive merely, and inpractice may be altered" as desired.

Associated with the clutch cam'lti in any mannerdesired, is a collar 25,grooved as at 26, to be engaged by a fork or other operating means oi;any sort, whereby the movement of the clutch C may be transmitted to Imotor runs idle.

may be had.

14, pulling the pivots l linwardly, and the areuate members 2 and 3 awayfrom thefly wheel. An inwardmovement of the clutch cam 16 permits thearcuate members to engage with the fly wheel,

The purpose, then, of the clutch C is to disengage the transmissionfromthe motor or source of power. l/Vhen sodisengaged the When saidclutch is engaged with the fly wheel, the various speeds, brakeapplication and reverse movement the drums 8 or 10, the motor andtransmission runs idle. The drums 9 being: brought into engagement withthe drum or planet carrier 8, theclutch G being engaged, the

driven shaft 33 may be operated as explained. vvhile I have thusdescribed. my lnvention with great particularity, it will be clear that;

the same modified throughout a wide range. I accordingly. do not proposeto be limited to the exact details of construction shownand described,but reserve the right in practice to make any and all modificationsscope of the ap:

thereof that fall within the pended claims.

The clutch C may also be connected to- The clutch is shown engaged'in-When the member 9 is in new tral position, that s, when not engaged withI claim as'my invention:

1-. A driving shaft, a driven shaft having a sleeve provided with ballapertures, a set of members concentric with said sleeve and havingdepressions adaptedto receive said balls, one of said members being inalignment with another of said members and keyed to the third of saidmembers, means to drivetwo of said members from the driving shaft atdifferent speeds,vand cam means for forcing the balls into thedepressions in either of said two members.

- 2. A driving shaft,a driven shafthaving a sleeve provided withball'apertur'eatwe members concentric with said sleeveand havmgdepressions adapted to receive said balls,

a ball depression ring in alignment with one of said members and keyedto and surround I ing the other of said members, said ring be mg alsoadapted. to recelve said balls, means to drive the two members from thedrlving shaft at diiferent speeds, and cam means for forcing the ballsinto the depressions in either of said two members. I

3. In a transmission mechanisnna driving shaft having a fly wheelthereon, clutching means on said shaft for clutching the latter tosaidfly Wheel, a pinion on said shaft, a conical drum planet carrier havingthree interconnected planet pinions, one of which meshes with the pinionon the driving shaft, two sun gears-meshing with the other of saidplanet pinions, a conical drum overlapping said planet carrier forcontrolling the rotation of said planet carrier, a driven shaft,

.and clutch means for connecting either or both of the sun gears to thedriven shaft.

In testimonywhereof I have. signed my name to this specification. ,7

- ARNOLD H. J ESSEN.

